The QPictureFormatPlugin class provides an abstract base for custom picture format plugins. More...
#include <QPictureFormatPlugin>This class is obsolete. It is provided to keep old source code working. We strongly advise against using it in new code.
Inherits QObject.
| QPictureFormatPlugin ( QObject * parent = 0 ) | |
| ~QPictureFormatPlugin () |
| virtual bool | installIOHandler ( const QString & format ) = 0 |
| virtual QStringList | keys () const = 0 |
| virtual bool | loadPicture ( const QString & format, const QString & fileName, QPicture * picture ) |
| virtual bool | savePicture ( const QString & format, const QString & fileName, const QPicture & picture ) |
The QPictureFormatPlugin class provides an abstract base for custom picture format plugins.
The picture format plugin is a simple plugin interface that makes it easy to create custom picture formats that can be used transparently by applications.
Writing an picture format plugin is achieved by subclassing this base class, reimplementing the pure virtual functions keys(), loadPicture(), savePicture(), and installIOHandler(), and exporting the class with the Q_EXPORT_PLUGIN2() macro.
See also How to Create Qt Plugins.
Constructs an picture format plugin with the given parent. This is invoked automatically by the Q_EXPORT_PLUGIN2() macro.
Destroys the picture format plugin.
You never have to call this explicitly. Qt destroys a plugin automatically when it is no longer used.
Installs a QPictureIO(obsolete) picture I/O handler for the picture format format.
See also keys().
Returns the list of picture formats this plugin supports.
See also installIOHandler().
Loads the picture stored in the file called fileName, with the given format, into *picture. Returns true on success; otherwise returns false.
See also savePicture().
Saves the given picture into the file called fileName, using the specified format. Returns true on success; otherwise returns false.
See also loadPicture().